TY - GEN
T1 - Flying capacitor multicell converter based DVR with energy minimized compensation strategy
AU - Hosseini, Seyed Hossein
AU - Sadigh, Arash Khoshkbar
AU - Tabrizi, Ali Farshchi
AU - Gharehpetian, Gevorg
PY - 2009/12/14
Y1 - 2009/12/14
N2 - One of the major power quality problems in distribution systems are voltage sags. This paper deals with a dynamic voltage restorer (DVR) as one of the different solutions to compensate these sags and protect sensitive loads. However, the quality of DVR output voltage, such as THD, is important. This paper present a new configuration of DVR based on flying capacitor multicell (FCM) converter. The main properties of FCM converter, which causes increase in the number of output voltage levels, are transformer-less operation and natural self-balancing of flying capacitors voltages. To avoid any exchange of active power in compensation process, the proposed DVR is controlled by energy minimized compensation strategy which is explained in details for general unbalanced voltage sags. Also, the proposed voltage sag detection method as well as proposed DVR reference voltage determination method based on synchronous reference frame (SRF) is adopted as the control system. The proposed DVR is simulated using PSCAD/EMTDC software and simulation results are presented to validate its effectiveness.
AB - One of the major power quality problems in distribution systems are voltage sags. This paper deals with a dynamic voltage restorer (DVR) as one of the different solutions to compensate these sags and protect sensitive loads. However, the quality of DVR output voltage, such as THD, is important. This paper present a new configuration of DVR based on flying capacitor multicell (FCM) converter. The main properties of FCM converter, which causes increase in the number of output voltage levels, are transformer-less operation and natural self-balancing of flying capacitors voltages. To avoid any exchange of active power in compensation process, the proposed DVR is controlled by energy minimized compensation strategy which is explained in details for general unbalanced voltage sags. Also, the proposed voltage sag detection method as well as proposed DVR reference voltage determination method based on synchronous reference frame (SRF) is adopted as the control system. The proposed DVR is simulated using PSCAD/EMTDC software and simulation results are presented to validate its effectiveness.
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M3 - Conference contribution
AN - SCOPUS:76249096707
SN - 9789944898188
T3 - ELECO 2009 - 6th International Conference on Electrical and Electronics Engineering
SP - I121-I125
BT - 6th International Conference on Electrical and Electronics Engineering, ELECO 2009
T2 - 6th International Conference on Electrical and Electronics Engineering, ELECO 2009
Y2 - 5 November 2009 through 8 November 2009
ER -